CVE-2023-6780 is an integer overflow vulnerability in the glibc library's __vsyslog_internal function, affecting glibc versions 2.37 and newer, including Fedora distributions. This flaw arises when syslog or vsyslog functions process excessively long messages, leading to incorrect buffer size calculations and undefined behavior. Rated Medium (CVSS 5.3), it has a low impact on availability and requires no user interaction, but its network-based attack vector makes it concerning. While no public exploits or Metasploit modules are available, and it's not on the KEV catalog, media coverage indicates potential for privilege escalation on major Linux distributions.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
All Versions ImpactedCPE match | cpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:* | ||
>= 2.37, < 2.39CPE matchmatch criteria | cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* | ||
38CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* | ||
39CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.